CN3M ASTM A743 (CENT, INVEST, SAND)
Grade（UNS）：CN3M (J94652)
Type：21Chromium,24 Nickel，with Molybdenum,
Chemical Requirements:
C(max):0.03
Men(max)：2.0
Si(max)：1.0
P(max):0.03
S(max):0.03
Cr:20.0~22.0
Ni:23.0~27.0
Molybdenum:4.5~5.5
Heat Treatment Requirements:
Heat to 2150°F [1175°C] minimum, hold for sufficient time to heat casting to temperature, quench in water or rapid
cool by other means
Tensile Requirements:
Tensile Strength, min
Tensile, ksi:63
Tensile, MPa:435
Yield Strength, min
Yield, ksi:25
Yield, MPa:170
Elongation in 2 in. [50 mm] min, %A: 30
Keywords: corrosion resistant; iron-chromium; iron-chromium nickel; steel castings